Differential mechanism



Jan. 24, 1928.

1,657,091 M. B. MORGAN DIFFERENTIAL MECHANISM Filed July 23, 1927 2Sheets-Sheet 1 1. Ms nrraemeva.

1,657,091 M. a. MORGAN DIFFERENTIAL MECHANISM Filed Ju1y 23, 1927 2Sheets-$heet 2 Patented Jan. 1928.

UNITED STATES, PATENT OFFICE.

MATHEW IB. MORGAN, OF DETROIT, MICHIGAN, ASSIGNOR TO THE TIMK EN-DETBOITAXLE COMPANY, OF DETROIT, MICHIGAN, ACORPORATION OI MICHIGAN.

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Application filed July 23,1927. Serial in. 207,859.

v This invention relates to difierential mechanism and has for itsprincipal objects to obtain reat compactness and rigidity. It consistthe parts and in the arrange ments and combinations of parts hereinafterdescribed and claimed.

In the accompanying drawing, wherein like numerals refer to like partswherever they ,occur,

Fig. 1 is a longitudinal sectional view of my differential mechanismtogether with adjacent portions of the driving axle construction inwhich it is mounted.

Fig. 2 is a cross-section of said difierential'mechanism on the planeindicated by the line 2-2 in Fig. 1.

Fig. 3 is a cross-section on the plane indicated by the line 3- -3 inFig. 1'.

Fig. 4 1s a side view of one-of the sections of the spider carrier; and

Fig. 5 is a cross-section of the spider can rier on the line 5-5 in Fig.4.

The present construction comprises vopposed bevel gears 1 with elongatedhubs 2 that are slotted endwise for engagement with splines providedtherefog on the respective shaft sections 3. Said construction a socomprises. bevel pinions 4 that mesh with said bevel gears 1 andaremounted on the radial arms 5 of a spider 6 whose central hub 7 fitsover the abutti'ng 'end portions of the hubs 2 of said bevel gears. Theouter ends of the spider arms fit in recesses- V 8 provided therefor ina support here1nafter designated as the spider carrier 9. This spidercarrier comprises two counterpart ring-like members 10 that fit flatwiseagainst each other. and which have opposed semi-spherical grooves intheir meeting faces arranged to constitute the recesses or seats 8 forthe spider arms. These sections are formed with outwardly extendedbosses or lugs 11 whose inner faces are recessed in continuation of therecesses 8 in the body portion thereof so as to increase the arealcontact between said sections and the spider arms. 7

The outer end surface of the bevel pinions 4 is spherical and fits inthe inner surface of the ider carrier, which is made spherical for t ispurpose. The spider carrier is inserted in a ring gear 12, preferably aworm gear, whleh has an inwardly extending flange 13, which is notchedor recessed to In addition to its obvious compactness,"

my construction is very strong and rigid, and eas to make of greatprecision. This is due argely to the fact that the s ider carriercooperates directly with all 0 the spider arms and distributes thedriving stress to all of the s ider arms equally. The simplicity of theesign of the spider, carrier members makes it a relatively easy matterto obtain the precision of fit that is required in'constructions of thistype.

What I claim is:

1. A differential mechanism comprising a gearring, a spider carrierhaving projecting portions interlocking with said gear ring, a

spider whose arms interlock with said carrier, pinions on said spider,opposed gears engaging said pinions, and easing members clamping saidring gear and said spider carrier in lace.

2. A di erential mechanism comprising a gear ring, a s ider carrierhaving projecting portions interlocking with said gear ring, a spiderwhose arms interlock with said. carrier, pinions on said spider, opposedgears engaging said pinions, and easing members clampingsaid ring gearand said spider carrier in place,-said spider carrier comprising twocounterpart ring sections that fit together flatwise and have radialrecesses in their meeting faces to receive the spider arms.

3. A difl'erential mechanism comprising a gear ring, a spider carrierhaving re ecting portions interlocking with said gear rin a spider Whosearms interlock with recesses in their meeting faces and extendsaicarrier, pinions on said spider, opposed mg through said projectingportions to regears engaglng said pinions, and easing celve the spiderarms. 1

members clamping said ring gear and said Signed at Detroit, Michigan,this 20th 5 spider carrier in place, saidspider carrier day of July,1927.

comprising two "counterpart ring sections that fit together ,fiatwiseand have radial MATHEW B. MORGAN.

